"I want to remain a Seahawk for the rest of my career," Thomas wrote, in part. "But I also believe that based on my production over the last eight years that I've earned the right to have this taken care of as soon as possible."

The Cowboys reportedly tried to trade for Thomas during April's draft. They are still interested in dealing for him, according to a report from Dallas station 105.3 The Fan.

Thomas, who has made six Pro Bowls, has spent all eight of his NFL seasons with the Seahawks. He tallied 56 solo tackles and two interceptions in 2017.